Home / 90,258.13-124,570.02-56,272.15

Finding the Fourth Proportional to 90,258.13, 124,570.02 and 56,272.15

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Solution

The fourth proportional to 90,258.13, 124,570.02 and 56,272.15 is: 77,664.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,258.13 : 124,570.02 = 56,272.15 : x
  2. Step 2: Convert to fraction form
    90,258.13/124,570.02 = 56,272.15/x
  3. Step 3: Cross multiply
    90,258.13x = 124,570.02 × 56,272.15
  4. Step 4: Simplify right side
    90,258.13x = 7,009,822,850.94
  5. Step 5: Solve for x
    x = 7,009,822,850.94/90,258.13
  6. Step 6: Final answer
    x = 77,664.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.